/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

var View = require("../../coord/View");

var _layout = require("../../util/layout");

var getLayoutRect = _layout.getLayoutRect;

var bbox = require("static/plugins/js/zrender/lib/core/bbox");

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
// FIXME Where to create the simple view coordinate system
function getViewRect(seriesModel, api, aspect) {
    var option = seriesModel.getBoxLayoutParams();
    option.aspect = aspect;
    return getLayoutRect(option, {
        width: api.getWidth(),
        height: api.getHeight(),
    });
}

function _default(ecModel, api) {
    var viewList = [];
    ecModel.eachSeriesByType("graph", function (seriesModel) {
        var coordSysType = seriesModel.get("coordinateSystem");

        if (!coordSysType || coordSysType === "view") {
            var data = seriesModel.getData();
            var positions = data.mapArray(function (idx) {
                var itemModel = data.getItemModel(idx);
                return [+itemModel.get("x"), +itemModel.get("y")];
            });
            var min = [];
            var max = [];
            bbox.fromPoints(positions, min, max); // If width or height is 0

            if (max[0] - min[0] === 0) {
                max[0] += 1;
                min[0] -= 1;
            }

            if (max[1] - min[1] === 0) {
                max[1] += 1;
                min[1] -= 1;
            }

            var aspect = (max[0] - min[0]) / (max[1] - min[1]); // FIXME If get view rect after data processed?

            var viewRect = getViewRect(seriesModel, api, aspect); // Position may be NaN, use view rect instead

            if (isNaN(aspect)) {
                min = [viewRect.x, viewRect.y];
                max = [
                    viewRect.x + viewRect.width,
                    viewRect.y + viewRect.height,
                ];
            }

            var bbWidth = max[0] - min[0];
            var bbHeight = max[1] - min[1];
            var viewWidth = viewRect.width;
            var viewHeight = viewRect.height;
            var viewCoordSys = (seriesModel.coordinateSystem = new View());
            viewCoordSys.zoomLimit = seriesModel.get("scaleLimit");
            viewCoordSys.setBoundingRect(min[0], min[1], bbWidth, bbHeight);
            viewCoordSys.setViewRect(
                viewRect.x,
                viewRect.y,
                viewWidth,
                viewHeight
            ); // Update roam info

            viewCoordSys.setCenter(seriesModel.get("center"));
            viewCoordSys.setZoom(seriesModel.get("zoom"));
            viewList.push(viewCoordSys);
        }
    });
    return viewList;
}

module.exports = _default;
